Two post handlers that add GradeEntries (one by single user, one by team)

AddSingle(andTeam)GradeEntryAction.py

class AddSingleGradeEntryAction(webapp2.RequestHandler):
  def post(self):
    assignment_key = ndb.Key(urlsafe=self.request.get('assignment_key'))
    student_key = ndb.Key(urlsafe=self.request.get('student_key'))
    student = student_key.get()
    score = int(self.request.get('score'))
    new_grade_entry = GradeEntry(parent=assignment_key,
                                 id=student.rose_username,
                                 assignment_key=assignment_key,
                                 student_key=student_key,
                                 score=score)
    new_grade_entry.put()
    self.redirect("/?active_assignment=" + assignment_key.urlsafe())


class AddTeamGradeEntryAction(webapp2.RequestHandler):
  def post(self):
    user = users.get_current_user()
    assignment_key = ndb.Key(urlsafe=self.request.get('assignment_key'))
    score = int(self.request.get('score'))
    team = self.request.get('team')
    student_query = Student.query(Student.team==team, ancestor=utils.get_parent_key(user))
    for student in student_query:
        new_grade_entry = GradeEntry(parent=assignment_key,
                                     id=student.rose_username,
                                     assignment_key=assignment_key,
                                     student_key=student.key,
                                     score=score)
        new_grade_entry.put()
    self.redirect("/?active_assignment=" + assignment_key.urlsafe())